Verb: To be shitty and not work, a person, object or anything.
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Irrelevant Chuck Norris jokes, to make no sense at all like: pussy-attic-mouse-kitty-fuck-job-tooth-ache. Mary Popins, Bad cars, Bad movies

Person 1: Man, this toothbrush does not work! I put it on vibrate, but it still won't give me the satisfaction of a dildo!
Person 2: Well, fuck, I'd say that's a jankety piece of shit.